Filter retainer



FIG. 1 is a front perspective view of a filter retainer in accordancewith my new design;

FIG. 2 is a top plan view of the filter retainer shown in FIG. 1;

FIG. 3 is a bottom plan view of the filter retainer shown in FIG. 1;

FIG. 4 is a left elevational view of the filter retainer shown in FIG.1;

FIG. 5 is a front elevational view of the filter retainer shown in FIG.1;

FIG. 6 is a right elevational view of the filter retainer shown in FIG.1; and,

FIG. 7 is a rear elevational view of the filter retainer shown in FIG.1.

The broken lines shown in the drawings represent portions of the filterretainer that form no part of the claimed design.

CLAIM The ornamental design for a filter retainer, as shown anddescribed.